2120425040 has 40 divisors (see below), whose sum is σ = 4932005760. Its totient is φ = 847822976.

The previous prime is 2120424989. The next prime is 2120425067. The reversal of 2120425040 is 405240212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293957 + ... + 301083.

It is an arithmetic number, because the mean of its divisors is an integer number (123300144).

Almost surely, 2^2120425040 is an apocalyptic number.

2120425040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120425040 is an abundant number, since it is smaller than the sum of its proper divisors (2811580720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2120425040 is a wasteful number, since it uses less digits than its factorization.

2120425040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10859 (or 10853 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 2120425040 is about 46048.0731410121. The cubic root of 2120425040 is about 1284.7175041517.

Adding to 2120425040 its reverse (405240212), we get a palindrome (2525665252).

The spelling of 2120425040 in words is "two billion, one hundred twenty million, four hundred twenty-five thousand, forty".